July 2019 in “Technology audit and production reserves” Researchers created probiotic shampoos with plant extracts that could be popular in Ukraine's natural cosmetics market.
January 2025 in “Yonsei Medical Journal” Mastic gum and peppermint extracts may promote hair growth and health.
30 citations
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December 2014 in “Toxicological Research” Peppermint oil can effectively promote hair growth without being toxic.
2 citations
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March 2015 in “Toxicology and Environmental Health Sciences” Rice bran extract caused moderate skin irritation but no eye irritation, while a diluted essence was not irritating to skin and only slightly to guinea pigs.
April 2019 in “Majalah Obat Tradisional” Menthol boosts the hair growth effects of Phyllanthus niruri gel.